20 Euro Base game incl River and Abbot
10 Euro each big expansion
25 Euro Minis complete
Totaling 55 Euro
Big box cost 65-85 Euro.
These prices are based on Big Box 3 and following releases.
I think you are using the numbers a little bit to prove your point. To be honest I don't like the composition of this new big box but you can't deny it's cheaper.
You set a price of 20€ for the base game. Pretty cheap considering you are in Sweden. Here in Spain is around 23-25 (cundco 23+ shipping)
You can find the big expansions at 10. Again a great deal here I cannot find any of them under 15 (on cundco the cheapest is at 13+shipping)
With the small ones you are right starting selling price was 25. But you can't buy them any other way than in the new big box or paying 35+ for the old art ones.
On the other hand it is easy to find big boxes on the 45-50€ range.
The way I see it is:
23+15+15+25=78
Against 50 for the big box